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Fat-Free Mass Index Calculator

Calculate your FFMI score and measure your lean muscle mass compared to your height.

Calculate Your FFMI

What Is Fat-Free Mass Index?

Fat-Free Mass Index (FFMI) measures the amount of lean body mass you have relative to your height.

It is commonly used by athletes and fitness enthusiasts to understand muscle development without focusing only on total body weight.

How It Works

Frequently Asked Questions

What is a good FFMI score?

FFMI values vary depending on genetics, training level, and body composition.

Why calculate FFMI instead of BMI?

FFMI focuses on lean muscle mass, while BMI only compares weight and height.

Can FFMI increase with training?

Yes, strength training and proper nutrition can help improve lean muscle mass.

Is FFMI accurate for everyone?

It is an estimation tool and results can vary depending on measurement accuracy.